Plant Reproduction: GABA Gradient, Guidance and Growth
نویسنده
چکیده
How a pollen tube manages to navigate through the female tissues during plant reproduction has been a mystery. A new analysis of an Arabidopsis mutant has provided the strongest evidence yet that a GABA gradient may be a critical signal for correct targeting of the pollen tube.
منابع مشابه
Pollen Tube Growth and Guidance Is Regulated by POP2, an Arabidopsis Gene that Controls GABA Levels
During angiosperm reproduction, pollen grains form a tube that navigates through female tissues to the micropyle, delivering sperm to the egg; the signals that mediate this process are poorly understood. Here, we describe a role for gamma-amino butyric acid (GABA) in pollen tube growth and guidance. In vitro, GABA stimulates pollen tube growth, although vast excesses are inhibitory. The Arabido...
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عنوان ژورنال:
- Current Biology
دوره 13 شماره
صفحات -
تاریخ انتشار 2003